Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 515 · 40 questions

The fast method (One-step multiplier): Increase by p%: multiply by (100 + p)% — up 20% is × 1.2. Decrease by p%: multiply by (100 − p)% — down 25% is × 0.75. Easy way to multiply: × the whole number (115 or 75), then ÷ 100.

1. 1.475 increased by 8% =
2. 2.325 decreased by 60% =
3. 3.240 decreased by 35% =
4. 4.720 decreased by 20% =
5. 5.220 increased by 30% =
6. 6.50 increased by 8% =
7. 7.675 decreased by 12% =
8. 8.500 decreased by 15% =
9. 9.40 decreased by 25% =
10. 10.700 increased by 12% =
11. 11.540 increased by 35% =
12. 12.424 increased by 75% =
13. 13.240 increased by 15% =
14. 14.770 decreased by 30% =
15. 15.200 decreased by 8% =
16. 16.280 increased by 30% =
17. 17.600 decreased by 35% =
18. 18.570 increased by 10% =
19. 19.180 increased by 5% =
20. 20.120 decreased by 20% =
21. 21.525 decreased by 60% =
22. 22.796 decreased by 25% =
23. 23.238 decreased by 50% =
24. 24.680 increased by 30% =
25. 25.320 decreased by 75% =
26. 26.325 decreased by 12% =
27. 27.760 decreased by 15% =
28. 28.190 decreased by 10% =
29. 29.575 decreased by 8% =
30. 30.40 increased by 35% =
31. 31.650 increased by 8% =
32. 32.580 increased by 5% =
33. 33.215 increased by 20% =
34. 34.430 decreased by 10% =
35. 35.280 decreased by 5% =
36. 36.340 decreased by 30% =
37. 37.200 decreased by 15% =
38. 38.100 increased by 35% =
39. 39.264 increased by 50% =
40. 40.705 decreased by 40% =

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths